Fixture for machining large slewing bearing

Abstract

The utility model discloses a clamp for machining a large slewing bearing, and belongs to the technical field of slewing bearing machining. The clamp for machining the large slewing bearing comprises a clamp base plate, a lifting air cylinder is fixedly connected to the middle position of the upper surface of the clamp base plate, a lifting plate is fixedly connected to the output end of the lifting air cylinder, a control plate is connected to the lower surface of the lifting plate through a connecting column, and bearing seats which are annularly distributed are arranged on the upper surface of the control plate; and the bearing seat is movably connected with a clamping assembly. According to the clamp for machining the large slewing bearing, through cooperative work of the lifting air cylinder and the driving motor, simultaneous positioning and clamping of the inner ring and the outer ring of the large slewing bearing can be achieved, synchronous action of all the clamping assemblies is guaranteed through the meshing design of the first bevel gear and the multiple second bevel gears, the clamping process is rapid and accurate, and the machining efficiency is improved. The machining efficiency is greatly improved, and the clamping diameter can be flexibly adjusted according to large slewing bearings of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of slewing bearings, and more particularly to a fixture for processing large slewing bearings. Background Art

[0002] Large slewing bearings are widely used in industries such as wind power generation, port machinery, and construction machinery. However, their large size and heavy weight can lead to problems such as difficult positioning and unstable clamping during machining, seriously impacting machining accuracy and efficiency. While some existing clamping devices for large workpieces exist, these devices generally suffer from complex structures, inconvenient operation, and high costs. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a fixture for machining a large slewing bearing to solve the above deficiencies.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0005] The utility model relates to a large-scale slewing bearing processing fixture, comprising a fixture chassis, a lifting cylinder fixedly connected to the middle position of the upper surface of the fixture chassis, a lifting plate fixedly connected to the output end of the lifting cylinder, a control plate connected to the lower surface of the lifting plate via a connecting column, an annularly distributed bearing seat is provided on the upper surface of the control plate, a clamping assembly is movably connected to the bearing seat, and the clamping assembly is movably connected to the fixture chassis.

[0006] Preferably, a sliding opening is provided on the edge of the control panel, and sliding bars are provided at equal distances on the inner wall of the fixture chassis, and the sliding bars are movably connected to the sliding opening to assist the control panel in moving steadily.

[0007] Preferably, a driving motor is fixedly connected to the center of the circle on the lower surface of the control plate, and the output end of the driving motor is connected to the first bevel gear. When the driving motor works, it drives the first bevel gear to rotate, and the first bevel gear is placed below the lifting plate.

[0008] Preferably, the clamping assembly includes a screw rod, a threaded sleeve, a first connecting plate, a second connecting plate, a first clamping block and a second clamping block. Both ends of the screw rod are movably connected to the bearing seat, the screw rod is engaged with the threaded sleeve, the lower ends of the first connecting plate and the second connecting plate are hinged to the threaded sleeve, the first connecting plate and the second connecting plate are distributed in a V shape, and the upper ends of the first connecting plate and the second connecting plate are hinged to the first clamping block and the second clamping block respectively.

[0009] Preferably, one end of the screw rod close to the first bevel gear is fixedly connected to the second bevel gear, and the second bevel gear is engaged with the first bevel gear. Through the rotation of the first bevel gear, all the second bevel gears are synchronously driven to rotate, thereby controlling the rotation of all the screw rods.

[0010] Preferably, an articulated slider is provided under the first clamping block and the second clamping block, and a ring-shaped limiting slide is provided on the clamp chassis. The articulated slider is movably connected to the limiting slide, and the limiting slide limits the moving path of the articulated slider. The upper end of the first connecting plate is hingedly connected to the articulated slider of the first clamping block, and the upper end of the second connecting plate is hingedly connected to the articulated slider of the second clamping block. When the threaded sleeve moves along the screw rod, it drives the first connecting plate, the second connecting plate, the first clamping block and the second clamping block to move their positions in the limiting slide, thereby adjusting the diameter that the first clamping block and the second clamping block can clamp.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0012] The large slewing bearing processing fixture of the utility model can realize the simultaneous positioning and clamping of the inner and outer rings of the large slewing bearing through the coordinated work of the lifting cylinder and the drive motor. The meshing design of the first bevel gear and the multiple second bevel gears ensures the synchronous action of all clamping components, making the clamping process fast and accurate, greatly improving the processing efficiency. The fixture adopts a screw rod and threaded sleeve transmission mechanism, and is combined with an adjustable first clamping block and a second clamping block. The clamping diameter can be flexibly adjusted according to large slewing bearings of different specifications. This design is not only suitable for slewing bearings of various sizes, but also can be stable after one adjustment. The workpiece is clamped in a fixed position, reducing the time and cost of changing the fixture. The first clamping block is designed as a convex arc structure, while the second clamping block adopts a concave V-shaped structure. This design can better fit the inner and outer rings of the slewing bearing during the clamping process, reducing damage to the workpiece surface and ensuring the surface quality after processing. The operation process of the entire fixture is simple and clear. It is only necessary to pre-adjust the position of the threaded sleeve according to the specific size of the slewing bearing, and then control the opening and closing of the clamping block by the lifting cylinder to complete the clamping task. This design reduces the difficulty of operation. Even non-professionals can easily get started, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structure diagram of the large slewing bearing processing fixture of the utility model;

[0014] Figure 2 This is a diagram of the internal structure of the fixture chassis of the present utility model;

[0015] Figure 3 For the utility model Figure 2 Exploded view;

[0016] Figure 4 This is a structural diagram of the connection between the control panel and the clamping assembly of the utility model.

[0017] In the figure: 1. Clamp chassis; 11. Lifting cylinder; 12. Lifting plate; 121. Connecting column; 13. Slide bar; 14. Limiting slide groove; 2. Control panel; 21. Drive motor; 22. First bevel gear; 23. Bearing seat; 24. Slide mouth; 3. Clamping assembly; 31. Screw; 311. Second bevel gear; 32. Threaded sleeve; 33. First connecting plate; 34. Second connecting plate; 35. First clamping block; 351. Articulated slider; 36. Second clamping block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0020] Combine Figures 1-4 The large-scale slewing bearing processing fixture of the present invention includes a fixture chassis 1. The interior of the fixture chassis 1 is a hollow structure. A lifting cylinder 11 is fixedly connected to the middle position of the upper surface of the fixture chassis 1. The output end of the lifting cylinder 11 is fixedly connected to a lifting plate 12. The lower surface of the lifting plate 12 is connected to a control board 2 through a connecting column 121. The control board 2 moves up and down under the control of the lifting cylinder 11. A sliding opening 24 is provided on the edge of the control board 2. Slide bars 13 are arranged at equal distances on the inner wall of the fixture chassis 1. The slide bars 13 are guided by the sliding opening 24 to assist the control board 2 in moving steadily.

[0021] A drive motor 21 is fixedly connected to the center of the lower surface of the control board 2. The output end of the drive motor 21 passes through the control board 2 and is connected to the upper surface of the control board 2. When the drive motor 21 works, it drives the first bevel gear 22 to rotate. The first bevel gear 22 is placed below the lifting plate 12. A ring-shaped bearing seat 23 is provided on the upper surface of the control board 2. A clamping assembly 3 is movably connected to the bearing seat 23, and the clamping assembly 3 is distributed around the first bevel gear 22.

[0022] The clamping assembly 3 includes a screw rod 31, a threaded sleeve 32, a first connecting plate 33, a second connecting plate 34, a first clamping block 35 and a second clamping block 36. Both ends of the screw rod 31 are movably connected to the bearing seat 23. One end of the screw rod 31 close to the first bevel gear 22 is fixedly connected to the second bevel gear 311. The second bevel gear 311 meshes with the first bevel gear 22. Through the rotation of the first bevel gear 22, all the second bevel gears 311 are synchronously driven to rotate, thereby controlling the rotation of all the screw rods 31. The threaded sleeve 32 engaged on the screw rod 31 is displaced when being limited. The lower ends of the first connecting plate 33 and the second connecting plate 34 are hinged to the threaded sleeve 32. The first connecting plate 33 and the second connecting plate 34 are V-shaped. The first clamping block 35 and the second clamping block 36 are provided with an articulated slider 351 below the first clamping block 35 and the second clamping block 36. The clamp chassis 1 is provided with an annularly distributed limiting slide groove 14. The articulated slider 351 is movably connected to the limiting slide groove 14. The limiting slide groove 14 limits the moving path of the articulated slider 351. At the same time, the first clamping block 35 and the second clamping block 36 are placed above the limiting slide groove 14. The lower surfaces of the first clamping block 35 and the second clamping block 36 are connected to the clamp chassis 1. The first clamping block 35 and the second clamping block 36 are restricted from rotating. The upper end of the first connecting plate 33 is hingedly connected to the articulated slider 351 of the first clamping block 35, and the upper end of the second connecting plate 34 is hingedly connected to the articulated slider 351 of the second clamping block 36. The threaded sleeve 32 is connected to the upper end of the first connecting plate 33. When the screw rod 31 moves, it drives the first connecting plate 33, the second connecting plate 34 together with the first clamping block 35 and the second clamping block 36 to move in the limiting slide groove 14, adjusting the diameter that the first clamping block 35 and the second clamping block 36 can clamp. When the threaded sleeve 32 follows the control plate 2 to move up as a whole, the angle between the first connecting plate 33 and the second connecting plate 34 increases, and the distance between the first clamping block 35 and the second clamping block 36 is pulled away. Conversely, when the threaded sleeve 32 follows the control plate 2 to move down as a whole, the angle between the first connecting plate 33 and the second connecting plate 34 decreases, and the distance between the first clamping block 35 and the second clamping block 36 is shortened, thereby clamping the large slewing bearing, wherein the first clamping block 35 pushes the inner ring of the slewing bearing. The inner ring of the slewing bearing is squeezed and fixed, and the second clamping block 36 fixes the outer ring of the slewing bearing. The first clamping block 35 is a convex arc structure, and the second clamping block 36 is a concave V-shaped structure. Through the joint action of the first clamping block 35 and the second clamping block 36, three-point fixation is set at the clamping position of the slewing bearing, which can better meet the needs of firmly clamping large slewing bearings. Multiple groups of first clamping blocks 35 and second clamping blocks 36 are distributed at equal distances. The clamping diameters of the first clamping block 35 and the second clamping block 36 are simultaneously controlled by the first bevel gear 22 and the screw rod 31. The lifting cylinder 11 is used to control the first clamping block 35 and the second clamping block 36 to move toward each other, so as to position the inner and outer rings of the large slewing bearing, and the operation is simple.

[0023] Working process: Fix the fixture chassis 1 at the set position. When it is necessary to process the large slewing bearing, first adjust the position of the threaded sleeve 32 according to the average value of the inner ring diameter and the outer ring diameter of the slewing bearing, drive the motor 21 to drive the first bevel gear 22 to rotate, control the second bevel gear 311 to rotate, and the threaded sleeve 32 engaged on the screw rod 31 moves to the appropriate position, driving the first connecting plate 33, the second connecting plate 34, the first clamping block 35 and the second clamping block 36 to move simultaneously. The control plate 2 moves up under the drive of the lifting cylinder 11, and the threaded sleeve 32 rises with the control plate 2. The angle between the first connecting plate 33 and the second connecting plate 34 increases, and the distance between the first clamping block 35 and the second clamping block 36 is widened. At this time, the slewing bearing to be clamped is placed between the first clamping block 35 and the second clamping block 36. The control plate 2 drives the threaded sleeve 32 to move down as a whole, the angle between the first connecting plate 33 and the second connecting plate 34 decreases, and the distance between the first clamping block 35 and the second clamping block 36 is close, so as to clamp the inner and outer rings of the large slewing bearing.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fixture for machining large slewing bearings, comprising a fixture chassis (1), characterized in that: A lifting cylinder (11) is fixedly connected to the middle position of the upper surface of the clamp chassis (1), and a lifting plate (12) is fixedly connected to the output end of the lifting cylinder (11). The lower surface of the lifting plate (12) is connected to the control board (2) via a connecting column (121). The upper surface of the control board (2) is provided with an annularly distributed bearing seat (23), and a clamping assembly (3) is movably connected to the bearing seat (23). The clamping assembly (3) is movably connected to the clamp chassis (1).

2. The large slewing bearing processing fixture according to claim 1, characterized in that: The edge of the control panel (2) is provided with a sliding opening (24), and the inner wall of the clamp chassis (1) is provided with sliding bars (13) at equal distances, and the sliding bars (13) are movably connected to the sliding opening (24).

3. The large slewing bearing processing fixture according to claim 1, characterized in that: A driving motor (21) is fixedly connected to the center of the lower surface of the control plate (2), and an output end of the driving motor (21) is connected to a first bevel gear (22), which is placed below the lifting plate (12).

4. The large slewing bearing processing fixture according to claim 3, characterized in that: The clamping assembly (3) comprises a screw rod (31), a threaded sleeve (32), a first connecting plate (33), a second connecting plate (34), a first clamping block (35) and a second clamping block (36). Both ends of the screw rod (31) are movably connected to the bearing seat (23). The screw rod (31) is engaged with the threaded sleeve (32). The lower ends of the first connecting plate (33) and the second connecting plate (34) are hinged to the threaded sleeve (32). The first connecting plate (33) and the second connecting plate (34) are distributed in a V shape. The upper ends of the first connecting plate (33) and the second connecting plate (34) are hinged to the first clamping block (35) and the second clamping block (36) respectively.

5. The large slewing bearing processing fixture according to claim 4, characterized in that: One end of the screw rod (31) close to the first bevel gear (22) is fixedly connected to a second bevel gear (311), and the second bevel gear (311) is meshed with the first bevel gear (22).

6. The large slewing bearing processing fixture according to claim 4, characterized in that: An articulated slider (351) is provided below the first clamping block (35) and the second clamping block (36), and a ring-shaped limiting slide groove (14) is provided on the clamp chassis (1). The articulated slider (351) is movably connected to the limiting slide groove (14), and the limiting slide groove (14) limits the moving path of the articulated slider (351). The upper end of the first connecting plate (33) is hingedly connected to the articulated slider (351) of the first clamping block (35), and the upper end of the second connecting plate (34) is hingedly connected to the articulated slider (351) of the second clamping block (36).

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